In securing bits in braces



i t 7 i ;c w y liNeW` Haven and cut, 1h e inyenteda new and e uring Bits in Braces` an `Ido herebydeclare ll',` clear, and exact eferencebeiug had ngs, making a part ich`fl i a Xof a joinersjbrace according to my in-`` Iged` section of -a por- Con helinefx :6,1Fig. `1. i

ce indicate corre-` 'al figures; entioniis `to secure' lgsh ks in braces or nianthatthey ,will be firmly ti ``be capablejoi' being lfthe braces; or mandetached therefroni, y t a great savingin its, but falso` insure a djustment of the bitfiu heshire, in the State of Connecti ``Iinproved Mode of S n the-Mandrels,fl& hat the following w f the anie r description o re onstructed with tan, in the socket of the `ese shanks are much ortions of the bit, and

is attended with consid-` ,and even when made `e are very `generally i n with theaxis'of the raceor mandre ngthe drilling or bor-` g tobe' attendedfiwnlth`` considerable friction the bits bliable to be bent or culties are fully obviated by Inynventio To enablethos understand and con proceedto describe n in the art to fully ctrny invention, I will surface a,-

'socket B, rests or bea stop i being fa screw, through the socket an as shown clearly in-Fig. 2. i

p E is not designed to be The screw or sto adjustable, but to remai socket. is ,filed or cut in th J ust above surface, c, which 1s no but forms an obtus 6 Figqs, in which ci face chear the vedg i from the screw or stop Fig. 8. By this arrange that when the` sc socket B and agai or pressed firmlyf cured in the sock .therein nor be casu calshanks `parativ el hitherto required i shanks isdispense ``shanks may be'fitt as to be .in line W surfaces a c, i stop or bearing E,

ary joiner7s brace pro- Arepresentsan'o ded withl a sock f secured. ``Thi 'bit dricalshank,;D,ofeq y n i f andatits ,end thereflis ar por a provided witha. c'yun; ual diameter throughout, tion filed or cut nwhioh the bit C is ranged substantia herein set forth. i

Witnesses:

' oifto `fornraqilane surface, a, and a shoulder,

i nb; which, when t ````shanl is inserted in the rew F nst the edge of theplane surface c that the plane sur agains By having the bits they may be coustruct small expense. The stock may be obtained in the `form proper lengths, and bit formed at one en `:filed or cut at the opposite end. The forgin'g without great ,c'iifficulty` Having thus described ;L UNITED i STAT-Es j PATENT OFFICE. l

IX oFwi-jsr onnsninn, oonNEoTIoUT.

rs against a stop, E, said which passes laterally d bears against the plane n permanently in the e plane surface'a there: e shank D another plane t at right angles with it,

as clearly sh'ownin n angle,

s indicated by dottedlines. F is a set-screw,'which passes laterally into the socket Brand be ars against the plane sure of it, which is farthest E, as shown clearly in ment it will-,be seen lis screwed intothe facea will be cramped t the inner end of the d the bit thereby firmly seally'withdrawn from it.

provided with cylindried at a comof cylinder rods cut into the cutting portion of the d and the`plane..surfaces n forming the square taper d with, and the cylindrical ed truly in the socket B, so n h the axisof the' socket, a. y

d with the i' square shanks my invention, what d desire to secure by Letin connection with the lly as and for the purpose JOHN MIX.

J Arms LAIRD, EDw. W. HoDGsoN. 

